Cone for locomotives



P. A. BY. Gone f o r 0 c o motives.

. No. 228,386. Patented lune 1, I880.

UNITED STATES PATENT OFFICE.

FRANCIS A. PERRY, OF KEENE, NEl/V HAMPSHIRE.

CONE FOR LOCOMOTIVES.

SPECIFICATION forming part of Letters Patent No. 228,386, dated June 1, 1880.

Application filed January 8, 1880.

To all whom it may concern:

Be it known that I, FRANCIS A. PERRY, of the city of Keene, in the county of Cheshire and State of New Hampshire, have invented a new and useful Improvement in Cones for Locomotive and Portable Engines, of which the following is a specification;

The invention relates to cast-iron or other metal cones for breaking up sparks that are forced against it by the exhaust steam from the engine. Heretofore such cones have been made of various sizes and forms, with rings, points, projections, ril'led, concave, and convex, all of which are old; but my improvement consists of a novel plan of breaking up the sparks through a zigzag channel, as shown.

The invention consists in the casting of a cone in wavy or zigzag channels, so that as the sparks are forced through them they are ground and broken up, and thus prevent their escaping in red-hot condition, which would endanger any inflammable property near the engine.

In the accompanying drawings, in which similar letters of reference indicate like parts, Figure l is an elevation of the cone A. Fig. 2 is a part plan of and sectionof the same.

The grooves D D D D are cast in a zigzag form, commencing at B and ending at G, and they may be cast or formed with sharp or round corners, but always in the style shown.

The operation of the device is as follows: Vhen placed upon standards over the upright pipe in the stack, or when bolted to the stack in the proper place, and the engine is set in motion, the exhaust-blast forces the sparks against the cone and into the grooves, where they are ground up, so that they will escape easily, and yet so small as to prevent any danger of fires that so often occur when the common plain cones are used.

I do not claim solid cones made with projections, rings, straight grooves, or rifled grooves, and I do not claim corrugated cones, as they are old; but

What I claim is In a spark arrester, the inverted cone A, provided with continuous zigzag corrugations D, constructed and arranged as shown, and for the purpose described.

FRANCIS A. PERRY.

Witnesses:

J. R. BEAL, A. F. BIGELOW. 

